Year	current US$
1994	118000000
1995	132000000
1996	160000000
1997	168000000
1998	180000000
1999	178000000
2000	177000000
2001	615851.281321729
2002	633981.312605333
2003	573714.311614763
2004	729710.022019936
2005	609194.496202642
2006	728800.694863442
2007	703594.969659413
2008	633706.427620866
2009	660462.957147867
2010	814358.909237384
2011	518994.669072475
2012	861942.599941731
2013	552880.102738492
2014	327038003.840485
2015	223577781.357291
2016	194066629.081208
2017	250243134.926374
2018	244621262.470942
2019	318511666.223381
2020	284728298.412929
2021	272474595.808307
2022	273838051.54573
2023	279314812.576645